it took 3 hours!!!
"cat" is a really nice touch for concatenation of those arrays! your solutions never fail my expectation.
by the way, i saw that "sub-func" comment...:)
Calling the two sub-functions the right way will not hurt your score. Great work though. :)
Is A the inverse of B?
Calculate the area of a triangle between three points
Convert radians to degrees
Remove the first, third and fifth rows of a matrix
Product of Each Column
Approximate the cosine function
Sum of adjacent elements in a vector
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